Shutter attachment.



C. MAEGHLER.

SHUTTER ATTACHMENT.

APPLICATION FILED JULY 16. 1908.

918,345. Patented Apr. 13, 1909.

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CARL MAEGHLER. OF NEW YORK, N. Y.

SHUTTER ATTACHMENT.

Specification of Letters Patent.

Application filed July 16, 1908.

Patented April 13, 1909.

Serial No. 443,860.

To all whom it may concern:

Be it known that l, CARL ManonLnn, a citizen ofthe United States, and aresident of the city of New York, Long Island City, borough of Queens,in the county of Queens and State of New York, have invented a new andImproved Shutter Attachment, of which the following is a full, clear,and exact description.

My invention relates to shutter attachments suitable for use uponwindows and the like, my more particular purpose being to provide forthe leaves of the shutter a comparatively high degree of adjustability,and also to enable the leaves to be held rigidly in position when onceadjusted.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a fragmentary front elevation showing an ordinary windowshutter with my improved shutter attachment mounted upon it, the leavesof the shutter being now folded and held rigidly in position by theattachment Fig. 2 is a substantially central vertical section throughthe shutter shown in Fig. 1, and showing how the adjusting rod issecured to the shutter bar and is in turn held in position by the springfingers of a bracket provided for this purpose, and Fig. 3 is a detailshowing in perspective the bracket provided with spring fingers.

A shutter frame is shown at 4 and is provided with a center piece 4. Theshutter leaves are shown at 5 and are connected with a shutter bar 6 byaid of staples 7, 8, as indicated in Fig. 2. Mounted upon the lower endof the shutter bar 6 is a bracket 9 pro vided with a portion 10 bentoutwardly from the shutter bar and terminating in a disk 11 serving as abearing. A U-shaped rod 12 of metal is pivotally connected at 12 withthis bearing and extends downwardly from the same. rounded end 13 andwith a reduced portion 14, made simply by bending the bar closely uponitself. back upon themselves are formed into shoulders so as to conferupon the bar 12 a fair degree of resiliency.

A bracket 15 is secured upon the center piece 4 by aid of screws 16.This bracket is provided with spring fingers 17, 18, the spring finger18 having a lug 19 extending This U-shaped rod is provided with a At 12the portions thus bent laterally from it so as to slightly overlap thespring linger 17. The spring fingers are provided with notches 20 forengaging the shoulders 12. 7

Below the shutter bar 6 is another shutter bar 6. If, as sometimeshappens, these shutter bars move toward each other, the bracket 9 mightget in the way and cause trouble except for the manner in which it ismounted. As the portion 10 extends in a lateral direction from theshutter bar 6, the U-shaped spring rod 12 is out of alinenient with theshutter bars. Hence, the greatest freedom of movement and of adjustmentis allowed to the shutter bars.

The operation of my device is as follows: In order to lock the leaves 5in folded position, as indicated in Fig. 2, the leaves are simply turnedon edge, this being done by aid of the shutter bar 6 in the usualmanner. The shoulders 12 click into the notches 20 as will be understoodfrom Fig. 2 and the leaves 5 are now unable to move. In order to movethem, the operator grasps the portion 14 of the U-shaped bar 12 anddraws it directly away from the center bar 4. This disengages theshoulders 12 from the notches 20 and allows the U-shaped spring bar 12to assume its outermost position. When this takes place the portion 14is against or adjacent to the lug 19 which, however, still con.- finesit intermediate the spring fingers 17, 18.

While the parts are in this position the i spring bar 12 may be moved upand down within proper limits. The spring fingers 17, 18 press lightlyupon the bar 12 for the reason that the oint of contact between thespring bar and tie spring fingers is adjacent to the outer ends of thespring fingers. The pressure at this point is comparatively weak andhence the bar 12 is easily moved up and down. The pressure of the springfingers is sufficient, however, to leave the spring bar 12 in suchcondition that it is unlikely to move from any accidental disturbance.

By forcing the spring bar toward or from the center piece l, the springfingers 17, 18 may be caused to press with any desired degree of tensionso that the leaves 5 are held with any desired degree of firmness. Asthe spring fingers 17, 1S become slightly worn or distorted, so thatthey tend to hold the spring bar with a loose grip, the proper degree ofpressure is supplied to the spring fingers by the operator who simplyforces the spring bar a little nearer to the center piece 4* in order tocompensate for the lack of sufficient pressure.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

'1; In ashutter attachment, the combination of a bracket to be securedupon a shutter bar, a spring bar connected with said bracket, and asecond bracket to be secured upon a center piece or the like, saidlastmentioned bracket being provided with spring fingers for engagingsaid spring bar.

2. The combination of a frame, leaves mounted thereupon and movablerelatively thereto, a shutter bar connected with said leaves foractuating the same, a longitudinal member connected with said shutterbar, and a bracket mounted upon said frame and provided with springfingers disposed upon opposite sides of said longitudinal member andengaging the same for the purpose of holding said leaves in variouspredetermined positions.

3. As an article of manufacture, a bracket v provided with springfingers, one being onger than another and overlapping the lat ter forthe purpose of holding a movable member intermediate said springfingers, a shutter bar connected with said movable member, leavesconnected with said shutter bar and movable thereby, and a framesupporting said leaves and said bracket.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

CARL MAECHLER.

Witnesses 1 ALEXANDER LEVENE,

BERTRAM L. MARKS.

